EP 1643446 B1 20070606 - Image reconstruction method and x-ray computed tomography apparatus
Title (en)
Image reconstruction method and x-ray computed tomography apparatus
Title (de)
Verfahren zur Bildrekonstruktion und Gerät zur Röntgenstrahl-Computertomografie
Title (fr)
Procédé pour la reconstruction d'images et appareil pour la tomographie par ordinateur à rayons X
Publication
Application
Priority
US 95165004 A 20040929
Abstract (en)
[origin: EP1643446A1] A image reconstruction method of determining an image data value at a point of reconstruction in a computed tomography (CT) image of a scanned object, comprises acquiring (900) projection data of the subject, filtering (901) the projection data with a one-dimensional ramp filter to generate ramp-filtered data, and applying (902) a backprojection operator with inverse distance weighting to the ramp-filtered data to generate the image data value at the point of reconstruction in the CT image.
IPC 8 full level
G06T 11/00 (2006.01); A61B 6/03 (2006.01); G06T 1/00 (2006.01); G06T 15/08 (2011.01)
CPC (source: EP US)
A61B 6/027 (2013.01 - EP US); G06T 11/005 (2013.01 - EP US); Y10S 378/901 (2013.01 - EP US)
Designated contracting state (EPC)
DE NL
DOCDB simple family (publication)
EP 1643446 A1 20060405; EP 1643446 B1 20070606; CN 100466981 C 20090311; CN 1788684 A 20060621; DE 602005001310 D1 20070719; DE 602005001310 T2 20080131; JP 2006095297 A 20060413; JP 5019193 B2 20120905; US 2006067457 A1 20060330; US 7424088 B2 20080909
DOCDB simple family (application)
EP 05020346 A 20050919; CN 200510137305 A 20050929; DE 602005001310 T 20050919; JP 2005267253 A 20050914; US 95165004 A 20040929